1st Grade Math Unit 12

Big Idea:

Place Value: numbers work together to create other numbers.

Student Expectations:

Priority TEKS

1.2B [Supporting] Use concrete and pictorial models to compose and decompose numbers up to 120 in more than one way as so many hundreds, so many tens, and so many ones;

1.2C [Readiness] Use objects, pictures, and expanded and standard forms to represent numbers up to 120;

1.2F [Supporting] Order whole numbers up to 120 using place value and open number lines;

Focus TEKS

1.3A [Supporting ] Use concrete and pictorial models to determine the sum of a multiple of 10 and a one-digit number in problems up to 99

Ongoing TEKS

1.2(A-C)Number and Operations - The student applies mathematical process standards to represent and compare whole numbers, the relative position and magnitude of whole numbers, and relationships within the numeration system related to place value. The student is expected to: (A) recognize instantly the quantity of structured arrangements; (B) use concrete and pictorial models to compose and decompose numbers up to 120 in more than one way as so many hundreds, so many tens, and so many ones; (C) use objects, pictures, and expanded and standard forms to represent numbers up to 120.

1.3C [Supporting] Compose 10 with two or more addends with and without concrete objects;

1.3D [Supporting] Apply basic fact strategies to add & subtract within 20, including making 10 and decomposing a number leading to 10;

1.3E [Supporting] Explain strategies used to solve addition & subtraction problems up to 20 using spoken words, objects, pictorial models, and number sentences;

1.5F [Supporting] Determine the unknown whole number in an addition or subtraction equation when the unknown may be any one of the 3 or 4 terms in the equation;

1.5B [Supporting] Skip count by twos, fives, and tens to determine the total number of objects up to 120 in a set;

Student Learning Targets:

• I will create a number in three or more ways.
• I will represent numbers up to 120 using objects, pictures, standard form, and expanded form.
• I will know the value of a digit.
• I will write my numbers to 120.

Essential Questions:

• Why is value of a digit important when comparing numbers?
• Can you show me different ways to represent a number?
• What is the value of a digit in any given number?
• How do numbers work together to make other numbers?
• Why is the order of place value important?

Extra Information:

Adopted Textbook: Pearson - enVision Math

District Grading Policy

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